[R] function names in a vector used by for (){} character problem ?

[Douglas Bates]

On 7/20/06, bunny , lautloscrew.com <bunny at lautloscrew.com> wrote:
> Hi there,
>
> i´m have vector of kernels. just like:
> kernels = c('gauss','epan','rectangular')
>
> i know there are density.default$kernels, but thats not my question
> here. my own kernel functions are running and working.
> my problem is the following is not working:
>
>
> dev.off()
> par(mfrow=c(3,3))
>
>
> for(i in 1:length(bw))
> {
>          for(j in 1:length(kernels))
>          {
>          par(mfg = c(i, j))
>                 nawaline2(eruptions,waiting,kernels[j],bw[i],1000)
>                 # FYI: the following worked but ofcourse all rows were the same
>                 # nawaline2(eruptions,waiting,gauss,bw[i],1000)
>
>          }
> }

> # here are the standard arguments for nawaline, kern exspects a
> function like gaussian, epan or rectangular.
> nawaline2(xi,yi,kern,h,N=1000)

Use get(kernels[i]), not kernels[i].  This is, I believe, a FAQ.

> there´s bw vector also that works well. the problem seems  that my
> kernels vector ist a vector of characters.
> I want to loop it using for ;  but every time it runs through, there
> ´s an error, that kern can´t be found.
> i think it´s only beacause  i don´t know how to get gauss instead of
> "gauss" and so on...
>
> has anybody an idea ? thanks so much in advance !!
>
>
>
>
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